In screenwriting there may be found the odd bit of (parenthetical) text inserted between the character's cue and their lines. This is nicknamed the
wryly, as in the adverb, prompting the actor how to deliver their line.
MEYER
(testily)
Must I teach you everything?
In principle, the wryly should be employed sparingly to disambiguate who is being addressed, suggest delivery that is not obvious from context, contrast the delivery with established character traits, etc. In practice, many screenwriters overuse wrylies, and directors and actors pride themselves in ignoring wrylies and interpreting lines
their way.
In movies and TV, dialogue and voiceovers (dialogue & prose) create humor, tension, suspense, and irony when they contrast with setting and action (illustration).
So in a PB, if it cannot reasonably be inferred from prose and dialogue that there must be visual elements that create humor, tension, suspense, and irony, by all means, add notes. Otherwise, one must either partner with an illustrator or become one.